Brake booster

Details Brake booster Brake booster

1990-09-19

1992-06-09

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303114R, 605471, B60T 844

Patent

active

051201151

ABSTRACT:
A brake booster for a pressure-fluid-actuated, and in particular hydraulic, brake system equipped with both ABS and traction control has a servo piston that is controllable by a brake pedal, and an additional piston that is controllable via a magnetic valve assembly in traction control operation; to control a brake pressure in the brake system, both pistons act via a pressure rod upon the brake piston of a master brake cylinder. For the sake of a short structural length of the brake booster, the additional piston is embodied as an annular piston, which coaxially surrounds the pressure rod and is sealed off from it, and which rests on a radially protruding driver element of the pressure rod in order to displace it.

REFERENCES:
patent: 4240330 (1980-12-01), Farr
patent: 4678243 (1987-07-01), Lieber
patent: 4681375 (1987-07-01), Belart
patent: 4687259 (1987-08-01), Reinartz et al.
patent: 4815793 (1989-03-01), Reinartz et al.
patent: 4875338 (1989-10-01), Lieber et al.

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